In general, most roads shouldn’t have a price for most drivers, and rewards for maintaining a particular speed sounds stupid.<p>However, we’d get big improvements to our urban/suburban city planning if we had (a) much less street parking, most of it metered; (b) looser or no parking requirements for houses and businesses written into the zoning laws, with mixed-use zoning allowing both smaller parking-free residential units and for-profit parking structures to pick up the slack from the reduction in free and required parking; (c) lower speed limits on urban streets encouraged by better street designs and enforced more strictly by traffic cops; (d) tolls on most highways; (e) much higher gas taxes to offset health and environmental costs of driving, and a removal of various automobile subsidies; (f) tolls for large vehicles like trucks which cause most road damage and cost the most in road maintenance, proportional to the amount of road wear they cause, which increases something like mass per wheel to the fourth power (a semi-trailer truck causes something like 1000x the road wear of a passenger car).